Wall lamp



FIG. 1 is a top, front perspective view of a wall lamp showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof, and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a wall lamp, as shown and described. 